Detroit River International Crossing Study. The Best Alternative At This Time For Being Considered The Preferred Alternative

Transcription

1 Detroit River International Crossing Study The Best Alternative At This Time For Being Considered The Preferred Alternative

2 Build Alternatives Included in DRIC DEIS Alternative Interchange Plaza Crossing #1 A P-a #2 B P-a #3 C P-a #5 E P-a #14 G P-a #16 I P-a #7 A P-c #9 B P-c #11 C P-c X-10 X-11 Source: The Corradino Group of Michigan, Inc.

3 Crossings

4 Plaza P-a in U.S. Source: The Corradino Group of Michigan, Inc. and Parsons Transportation Group

5 Plaza P-c in U.S. Source: The Corradino Group of Michigan, Inc. and Parsons Transportation Group

6 U.S. Interchange with I-75 Alternatives #1 and #7/Interchange A Alternatives #1 and #7/Interchange A Alternatives #2 and #9/Interchange B Alternatives #2 and #9/Interchange B Alternatives #3 and #11/Interchange C Alternatives #3 and #11/Interchange C Alternative #5/Interchange E Alternative #5/Interchange E Alternative #14/Interchange G Alternative #14/Interchange G Alternative #16/Interchange I Alternative #16/Interchange I

7 X-10 Crossing Alternatives in U.S. #1, #2, #3, #5, #14 and #16 Alternative #1 Alternative #1 Alternative #1 Alternative #5 Alternative #14 Alternative #16 Source: The Corradino Group of Michigan, Inc. and Parsons Transportation Group

8 X-11 Crossing Alternatives in U.S. #7, #9 and #11 Alternative #7 Alternative #9 Alternative #11 Source: The Corradino Group of Michigan, Inc. and Parsons Transportation Group

9 Evaluation Factor Weightings U.S. and Canadian Technical Teams Source: The Corradino Group of Michigan, Inc. and URS Canada

10 Detroit River International Crossing Study The Crossings

11 Regional Mobility The X-10 Crossings are forecast to carry, in 2035, 15 to 50 percent more traffic than the X-11 Crossing. The X-10 Crossings are forecast to carry, in 2035, 50 to 60 % of the combined traffic carried by the proposed new crossing and the Ambassador Bridge. The X-11 Crossing, between 40 and 43% of the combined traffic. This measure indicates the relief to be provided to the regional network, particularly Huron Church Road. Source: The Corradino Group of Michigan, Inc.

12 Potential Relocations The number of potential relocations of residential properties associated with the X-10 Crossings (0) are lower than the X-11 Crossing ( 21). The number of potential relocations of businesses associated with the X-10 Crossings (0) are lower than the X-11 Crossing (5). Source: The Corradino Group of Michigan, Inc.

13 Alt. Crossing #1 X-10 #2 X-10 #3 X-10 #5 X-10 #7 X-11 #9 X-11 #11 X-11 #14 X-10 #16 X-10 Detroit River International Crossing Study Active Relocation Units Potential Relocations in U.S. Crossing Plaza Interchange Gateway Boulevard Railroad Total Residential Business Residential Business Residential Business Residential Business Residential Business Residential Business Residential Business Residential Business Residential Business

14 Constructability The brine well investigation indicates that: All bridge foundations on both sides of the river are cleared from risk. But, along the Canadian approach to Crossing X-11: Additional investigation is needed to clear the crossing from risk. Even if those investigations are undertaken, the resulting data may still indicate the risk may not be acceptable.

15 Constructability There would be extra cost associated with building the X-11approach structure in Canada (as much as $CAD260 million( w/ inflation)) and the time to assess the risk and build the facility is at least one year.

16 Constructability The estimated construction cost of the main span of the suspension bridge at Crossing X- 10A ($1.2 billion w/inflation) is significantly greater than the suspension bridges at Crossing X-10B ($680 million w/inflation). The duration of 62 months to construct the main span of Crossing X-10A is over one year more than Crossings X-10B. Source: The Corradino Group of Michigan, Inc.

17 Other Evaluation Factors There are no significant differences among the crossings in the other evaluation factors. Source: The Corradino Group of Michigan, Inc.

18 Crossings Conclusions Crossing X-11 is not the best candidate at this time for being considered the Preferred Alternative. Plaza P-c, in U.S. attached to Crossing X-11, therefore, is also not the best candidate at this time for being considered the Preferred Alternative. Crossing X-10A is not the best candidate at this time for being the considered the Preferred Alternative. Source: The Corradino Group of Michigan, Inc.

19 Detroit River International Crossing Study The Interchanges

20 U.S. Interchange Alternatives with I-75 Alternatives #1 and #7/Interchange A Alternatives #1 and #7/Interchange A Alternatives #2 and #9/Interchange B Alternatives #2 and #9/Interchange B Alternatives #3 and #11/Interchange C Alternatives #3 and #11/Interchange C Alternative #5/Interchange E Alternative #5/Interchange E Alternative #14/Interchange G Alternative #14/Interchange G Alternative #16/Interchange I Alternative #16/Interchange I

21 Interchanges There is an important difference among interchange alternatives in the potential impact to properties on or eligible for the National Register of Historic Places, i.e., 4(f) properties. If there is a prudent and feasible alternative, 4(f) properties must be avoided.

22 Interchanges Alternative #3/Interchange C cannot avoid the Berwalt Building a 4(f) property. Alternative #5/Interchange E cannot avoid the Berwalt Building and the Detroit Savings Bank 4(f) properties

23 Interchanges Alternatives #3 and #5 would each impact about 25 businesses, a larger number than all other interchange alternatives (16 to 20 bu s).

24 Alt. Crossing #1 X-10 #2 X-10 #3 X-10 #5 X-10 #7 X-11 #9 X-11 #11 X-11 #14 X-10 #16 X-10 Detroit River International Crossing Study Potential Relocations in U.S. Active Relocation Units Crossing Plaza Interchange Gateway Boulevard Railroad Total Residential Business Residential Business Residential Business Residential Business Residential Business Residential Business Residential Business Residential Business Residential Business

25 Interchanges Protecting the neighborhood/community cohesion is the second most-important evaluation factor. Alternative #14/Interchange G would offer no roadway access across I-75 between Waterman and Clark Streets. Other interchange alternatives do better. Alternative #14/Interchange G would not provide the same access to I-75 as the other interchange alternatives.

26 Interchanges Alternative #14/Interchange G would also have a lower ramp design speed than all other alternative interchanges.

27 Overall Conclusions The alternatives receiving further evaluation are: Alternative Interchange Plaza Crossing #1 A P-a #2 B P-a #16 I P-a Source: The Corradino Group of Michigan, Inc. X-10B Source: The Corradino Group of Michigan, Inc.

28 Engineering Review of Interchanges Key Issues: Local vehicular access to/from I-75 Local vehicular access across I-75 Springwells Interchange Service drive alignment at Berwalt Manor Pedestrian access across I-75 Source: The Corradino Group of Michigan, Inc.

29 Engineering Review of Interchanges Each workgroup examined: Key stakeholders Constraints Issues Needs/Desires Source: The Corradino Group of Michigan, Inc.

30 Engineering Review of Interchanges Local vehicular access to/from I-75 Source: The Corradino Group of Michigan, Inc.

31 Proposed Hybrid Ramp System at Livernois/Dragoon

32 Engineering Review of Interchanges Local vehicular access across I-75 Source: The Corradino Group of Michigan, Inc.

33 Cross I-75 Access at Livernois/Dragoon

34 Cross I-75 Access at Livernois/Dragoon

35 Engineering Review of Interchanges Springwells Interchange Source: The Corradino Group of Michigan, Inc.

36 Full Urban Diamond Interchange at Springwells

37 Engineering Review of Interchanges Service Drive alignment at Berwalt Manor Source: The Corradino Group of Michigan, Inc.

38 Interchange A Modified at Berwalt Manor BERWALT MANOR DETROIT SAVINGS BANK

39 Engineering Review of Interchanges Pedestrian access across I-75 Source: The Corradino Group of Michigan, Inc.

40 Pedestrian Access Across I-75

41 Hybrid Interchange Alternative

42 Overall Conclusions The best candidate at this time for the Preferred Crossing Alternative is identified as X-10B. Because Plaza P-a is associated with this crossing it is the best candidate at this time for being the Preferred Alternative. The best U.S. Interchange at this time is a hybrid of the elements of Interchange A, Interchange B, Source: The Corradino Group of Michigan, Inc. and Interchange I. Some elements are still being refined.

43 Next Steps Continue collaboration with Canadian Team. Continue collaboration with U.S. Federal/State agencies. Complete FEIS/ROD/Access Justification.